Note 4 - Income Taxes (Details Textual) $ in Millions	9 Months Ended
	Sep. 30, 2015 USD ($)
State and Local Jurisdiction [Member]
Deferred Tax Assets, Valuation Allowance	$ 1.0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	$ 1.6